Who is the Norse god Tyr?
Tyr in Viking work from Sweden, 700s AD Tyr (or Tiw) was the German form of the Indo-European sky god Dyeus Piter. He was the same god as the Greek [...]
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06, 2017
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06, 2017
What is water made of? Molecules and chemistry
A big ocean wave The first molecules of water formed out in space, about 14 billion years ago, as part of the nebula left over after an early star exploded [...]
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06, 2017
Ice, water, and simple chemistry
Ice chemistry: Perito Moreno glacier, Argentina (thanks to Argentina's Travel Guide) How water freezes into ice When water gets colder than 32 degrees Fahrenheit or zero degrees Celsius, it freezes [...]
